Water-jacketed cylinder for internal-combustion engines.



R. L. GRUBER.

WATER JAOKETED CYLINDER FOR INTERNAL COMBUSTION ENGINBE. APPLICATION FILED r2119, 1911.

gffi'y Patented Nov. 28, 1911.

I l l r V I w r cooling principles, embodying hail...

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implication filed February hustion Engines, of which the following is a specification.

This invention relates to internal combustion engines, and more especially to those which are exposed to weathereonditions.

The object of my iiiyention is to eoinliiine in a single engine the water-cool1r tages 01 both, without the disadvantages oi. either.

The advantages in genefial of providing a Water-jacket tor the cylinders oil? internal combustion engines are well-lanim'n, provid ing as they do for ample radiation surface, and keeping the temperature of the oylindana Walls at a niininnun; but on the other hand the Water in the jaclret likely to :lrecze in cold Weather, and burst the iaclretalls, thereby rendering the engine useless. Also should the water he allowed to dry up, the cylinder will be deprived of any cooling means, since it is insulated :trcni the outer air to a large degree by the oi? the acltet.

in my invention I provide a water which enrelops only one longritud" of th cylinder, the other hall? being; rided with external air-cooling ribs or the like for cooling by an air 'lhere rent. being; no inclosed space with. parallel walls, the freezing of water in the jacket burst its walls, and on the other hand should the Water dry up, there is still suliieient air-- cooling surface to keep the cylinder at a reasonable temperature. The water being in contact with one-halt of the c inder, practically keeps the whole at n arly the same temperature, on account oi. the rapid conducting qualities of the metal, as it it were in contact with the whole circumference.

For the better understanding of my inyention 1" have illustrated in the aceoi'npanying drawing an improved :lorni thereof; and herein- Figure 1 is an endwiew ot the cylinder casting, the right-hand half being; sectioned upon a median plane; and Fig. 53 is a side elevation thereof, of which the left-hand portion is sectioned upon a median plane.

The cylinder-bore is designated a, of which the head-end is shown at a, and the era-ult- Specification of Letters Patent.

ll atenfted Nov. 5258, 1911..

9, 1911. Serial No. tlfl'l ",523.

end at (1, At the head-end o is shown a taper-threaded portion Z) for the spark-plug, and at the opposite end of the stroke an aperture 0, which forms a relief-exhaust when the engine at the bottom of its stroke, this being an independent invention which. is not herein claimed, but which I propose to claim in a separate application. The cylinder is siukrounded by the usual radiation ribs (Z or other like means for providing suflicient cooling surface, and at one end of the cylinder in the present model are placed outstanding lugs e for supporting it. Eltis shown a luln'ication passage, and, at (7 the threaded apertures for the studs which secure the cylinder-head in place.

That portion oi? the casting which forms the water-jacket is designated 7L, inolosing a "fi.lQP-Cl1il1i1.l38l' oLt suilicient capacity for the desired quantity of cooling; water, and pro vided at the top with a flanged aperture i to receive the Water. Oi? course my invention not limited to this pm'ticular :Eorm oil? water chamber, or style of engine, for while the present model is intended for use without a special watenoooling apparatus or (.:ondenscr, it is equally adapted for use with such. an apparatus.

The 'priuei'g'ile of the invention consists in facing the bottom oil. said chamber at j, which is or about the horizontal median plane oi? the cylinder, thus causing the upper half only to be surrounded by Water, and leaving the outer halt open to the atmosphere. Tillie Wit i; it the lower end of the chamber, one of which is constituted by the cylinder-Wall, are made to diverge as shown, whereby any water which freezes in the bot torn will be forced upwardly by the expansion against the diverging walls, and cracking: of the latter prevented.

From the above description it will he readily seen that my invention is not limited to special forms and mechanical construe tions such as l have heminabove shown by Way of illustration, but that the principles thereof are erq'n'essi ble in a variety of ways as will be well understood by those skilled in the art; therefore the scope of my claims is to be interpreted in View of such alterna tive constructions.

Having thus d scribed my invent-ion What i claim as new and. desire to secure by Let tors Patent is:

"i. In an internal-combustion engine, a cyl indcr having one longitudinal halt waterjacketed, and the other longitudinal half exposed to the atmosphere and provided with atmospheric cooling surfaces.

2. In an internal-combustion engine, a cylinder divided longitudinally into two portions, one of which is water-jacketed, and the other exposed to the atmosphere.

3. In an internal-combustion engine, a cylinder having a water-jacket adjacent to the walls of one longitudinal half thereof, said jacket having outer Walls which diverge from those of the cylinder all the way to the upper edge of the latter, thereby providing expansion room against the freezing of the water contained therein.

4. In an internal-combustion engine, a cylinto two parts, and a water-jacket inclosing the uppermost part. and having its outer walls dlvergin upwardly from those of the cylinder, where y to provide expansion room against the freezing of the water contained therein.

6. In an internal combustion engine, a horizontal cylinder divided longitudinally into two parts, and a water-jacket inclosing the uppermost part and having its outer walls divergin' upwardly from those'of the cylinder, where y to provide expansion room against the'freezing of the water contained therein, the lowermost of said parts being provided with radiation surfaces for atmospheric cooling.

In witness whereof I have hereunto set my hand in the presence of two witnesses. I

RAYMOND L. GRUBER. Witnesses:

F. H. HAMILTON, G. A. MnssER. 

